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Orthopaedics & Traumatology: Surgery & Research
Sous presse. Epreuves corrigées par l'auteur. Disponible en ligne depuis le jeudi 14 mars 2019
Doi : 10.1016/j.otsr.2018.11.023
Received : 29 January 2018 ;  accepted : 28 November 2018
The “Auto-Constant”: Can we estimate the Constant-Murley score with a self-administered questionnaire? A pilot study
 

Mikaël Chelli , Yohann Levy, Vincent Lavoué, Gilles Clowez, Jean-François Gonzalez, Pascal Boileau
 Institut Universitaire Locomoteur et du Sport, University Hospital of Nice, 06000 Nice, France 

Corresponding author. University hospital of Nice, Institut Universitaire Locomoteur et du Sport, 30, voie Romaine, Nice 06000, France.France
Abstract
Introduction

The Constant score, allows an objective and subjective assessment of the shoulder function. It has been proven to have a poor interobserver reliability for some of its aspects and is not usable as a remote assessment tool.

Hypothesis

The Constant-Murley functional shoulder score can be assessed with a self-administered questionnaire.

Methods

We conducted a prospective continuous study in a shoulder-specialized service. For each patient seen in consultation or hospitalized for a shoulder pathology, a self-administered questionnaire was delivered, and a clinical examination was performed by a surgeon. The questionnaire, in French language, was composed of checkboxes only, with pictures preferred over text for most items. Correlations with surgeon examination were assessed with the intraclass correlation coefficients, differences with the paired t -test.

Results

One hundred consecutive patients were analyzed. Correlation between the two scores was excellent (0.87), as were the range of motion and the pain subscores (0.85 and 0.78), good for the activity (0.69) and fair for the strength (0.57). The mean total score was 3 points lower for the self-administered questionnaire (CI95 [−5; −1]; p <0.01). Activity and pain were not significantly different (−0.4/20 and −0.3/40; p >0.05) but pain and force were slightly different (+0.8/15; −3.0/25; p <0.01).

Conclusion

The Auto-Constant questionnaire in French is an excellent estimator of the Constant score, and of its pain and mobility sub-scores. It is less accurate for the evaluation of the strength, but differences between sub-scores compensate and allow its use in daily practice.

Level of proof

II, Prospective continuous clinical series.

The full text of this article is available in PDF format.

Keywords : Shoulder, Patient Reported Outcome Measures, Surveys and Questionnaires


1  The online form, available in the electronic appendix, is also on: auto-constant/


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